Question

An effort of 400 N is used to lift 800 N load by using a lever. If the load is at a distance of 40 cm from fulcrum, find the MA and effort distance of the machine. *

Answer 1

Answer:

effort =400 N

load =800 N

load arm = 40cm

ma = ?

ma = load/effort = 800/400 =2

Explanation:

Answer 2

Answer:

MA= 2

effort arm= 80 cm

Explanation:

given:

effort =400 N

load =800 N

load arm =40cm = 0.4m

by the equation of Mechanical Advantage

$MA=\frac{Load}{effort}=\frac{800}{400} =2$

also,

$MA=\frac{effort arm}{load arm}$

⇒ effort arm= MA x load arm

                    =2 x 0.4

                     =0.8

                     =80 cm